Narrow linewidth 1560 nm InGaAsP split-contact corrugated ridge waveguide DFB lasers

作者：Dridi Kais^*; Benhsaien Abdessamad; Zhang Jessica; Hall Trevor J

来源：Optics Letters, 2014, 39(21): 6197-6200.

DOI：10.1364/OL.39.006197

We demonstrate a split-contact corrugated ridge waveguide InGaAsP distributed feedback laser at 1560 nm. The laser cavity has been defined with uniform third-order gratings etched along the sidewalls of the ridge waveguide. The gratings were fabricated using a standard I-line stepper lithography technique along with an inductively coupled reactive ion-etching process. Stable single-mode operation has been achieved with side-mode suppression ratios %26gt;= 50 dB, output powers %26gt;= 7 mW, a wavelength tuning range %26gt;= 2.3 nm, and narrow linewidths (%26lt;= 140 kHz) for different biasing conditions, with a minimum of 70 kHz. The effect of p-contact partition on device performance is also studied.

• 出版日期2014-11-1